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12619 Sigma-Aldrich

Potassium disulfite

puriss., meets analytical specification of Ph.Eur., BP, NF, FCC, E224, 95.0-101.0% (iodometric), powder, 51.8-57.6% sulfur dioxide

Synonym: Potassium metabisulfite, Potassium pyrosulfite

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Properties

Related Categories Chemical Synthesis, Essential Chemicals, Inorganic Salts, Potassium, Potassium Salts,
InChI Key   RWPGFSMJFRPDDP-UHFFFAOYSA-L
grade   puriss.
assay   95.0-101.0% (iodometric)
form   powder
quality   meets analytical specification of Ph.Eur., BP, NF, FCC, E224
impurities   organic volatile impurities, complies (GC)
  residual solvents, in accordance
  ≤0.001% heavy metals (as Pb)
  ≤0.08% thiosulfate (S2O3)
  51.8-57.6% sulfur dioxide
pH   3.5-4.5 (20 °C, 5%)
anion traces   chloride (Cl-): ≤100 mg/kg
cation traces   As: ≤2 mg/kg
  Cu: ≤20 mg/kg
  Fe: ≤10 mg/kg
  Hg: ≤1 mg/kg
  Pb: ≤2 mg/kg
  Se: ≤5 mg/kg
  Zn: ≤20 mg/kg
suitability   in accordance for appearance of solution
Safety & Documentation

Safety Information

Symbol 
GHS05  GHS05
Signal word 
Danger
Hazard statements 
Precautionary statements 
Supplemental Hazard Statements 
Contact with acids liberates toxic gas.
RIDADR 
NONH for all modes of transport
WGK Germany 
1
RTECS 
TT4920000

Documents

Certificate of Analysis (COA)

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Single- & multi-channel pipettes from BRAND
Protocols & Articles
Peer-Reviewed Papers
15

References

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